function ND = expand_detection(detection_img,block_size)
%UNTITLED 此处显示有关此函数的摘要
%   此处显示详细说明
[col,row]=size(detection_img);
ND=zeros(col*block_size,row*block_size);
for i=1:col
    for j=1:row
        if detection_img(i,j)~=0
            ND((i-1)*block_size+1:i*block_size,(j-1)*block_size+1:j*block_size)=255;
        end
    end
end
end

